Razor-stropping device.



No. 653,9I4. Patented .luly I7, |900.

H. HERDEH.

RAZOR STROPPING DEVICE.

(Application filed Feb. 23, 1900.) N u M o d el W/ TNE SSE S JLU.

. A 770/?NEY iNrrn STATES- HERMAN HERDER, OF PHILADELPHIA, PENNSYLVANIA.

RAZOR-STROPPING DEVICE.

SPECIFICATION forming part of Letters Patent No. 658,914, dated July 17,1900.

Application filed February 23, 1900. Serial No. 6,148. (No model.)

T0 all whom iv' may concern.-

Be it known that I, HERMAN l-IERDER, a citizen of the United States,residing at Philadelphia, in the State of Pennsylvania, have inventedcertain new and useful Improvements in Razor-Stropping Devices, of whichthe following is a full, clear, and exact description, reference beinghad to the accompanying drawings, forming a part of this specification.

My invention relates to razor-stropping devices, and has for its objectthe provision of means in a suitable device whereby the blade of a razormay be suitably supported on the strap while bein g honed, and wherebythe cutting edge on each side alternately is automatically presented tothe strap only when the device is moved in a direction away from theedge of the blade, and, nally, whereby the blade edge is automaticallypresented to the strap in a longitudinally-inclined direction inimitation of the manual movement of a razor-blade on a strap, so asthereby to present the whole blade edge to the strap at each stroke.

To these ends my invention consists in the rotatable blade-holdingdevice hereinafter described, having gearing mounted upon its end, incombination with a pivotally-mounted handle, with means to limit thepivotal swing thereof, and a toothed gearing upon its swinging endmeshing with the gearing-on the rotatable blade-holding spindle.

In the accompanying drawings, illustrating my invention, Figure 1 is anelevation of the device, the dotted lines showing the pivotal swing ofthe blade-holding spindle and its adjacent parts, in the cross portionof which it is journaled.- Fig. 2 is an under view of the same. Fig. 3is a side elevation, partly in section; and Fig. 4 is a top View lookingdown on the instrument in the position shown in Fig. 2.

Similar letters of reference in the several views refer to like parts.

The device consists of a holder (indicated at A) composed of a cross-barcarrying extension-arms a d, which may be longer or shorter, as may benecessary to get a firm rest upon the strap, and these arms arepreferably covered with rubber tubing, as indicated at b b.

The central portion of the cross-bar A is hollowed out to provide asleeve-like bearing for the extreme end c of the blade-holder C, andsaid blade-holder is provided with annular gear-teeth. In the drawingsblade-holder C is shown made in two parts; but this is not at allessential. It may be made in any usual way, as bladeholders in likeinstruments of this character are made.

The device has pivotally mounted upon the extension end a of thecross-bar A a handle B, carrying a bearing-piece in the form shown insection in Fig. 3 and in rear elevation in Fig. 2. A portion thereof(marked s) which proceeds from the handle proper is flat and is securedto the cross-bar A of the bladeholder by a set-screw m, passing throughthe extension end a of the cross-bar A, and terminates in a sector endH, having on its under face a toothed rack h, meshing with a gear d ofthe blade-holder, and said sector also has below it and in the sameparallel curve with its teeth a slot n, into which projects anactuating-pin t, mounted upon the cross-bar A.

The operation of the device is as follows: The arms a a are laid uponthe strap, which brings the edge of the blade in proximity to the strap,as shown in Fig. 2, or as shown in Fig. 1 in reverse position. Takingnow Fig. l, if the device is moved to the right over the strap it willbe observed that the edge will bear upon the strap in a direction awayfrom the curved back of the blade. The end of the stroke being reached,if the movement of the device is then to the left it will throw theblade over, as shown in Fig. l, bringing the other side of the edge tothe strap ina direction away from the edge of the blade. In other words,the device held in the hand in the position shown in Fig. 1 makes itimpossible for the blade to be turned on the strap by its cutting edge,but always by its back edge; but the chief value of my invention is thatthe pivotal swing of the bladeholder frame in the handle always bringsthe bladeon the strap at an angle, as shown in Fig. l, and is an exactreproduction of the manual stropping of a razor-blade. Such an inclineddrawing of the blade over the strap sharpens the whole length of theblade edge IOO at one stroke. No other stropping device heretoforeconstructed has ever accomplished that result.

I am aware that various razor-stropping` devices have been devised toautomatically throw the blade over by its back edge, but none forinclined honing,) the nearest of which to mine for the first-namedpurpose being that shown in Patent No. 405,961, dated June 25, 1880; butthat device requires that the arms a a should be rotating spindles andshould carry gearing whereby the blade-holding spindle is rotated in anarc of a circle. In my device the arms a a simply support the apparatusupon the strap, and the rotation of the blade-holder in an arc of acircle is' accomplished by its gearing actuated by the pivotally-mountedhandle and its sector gearing suitably limited by the pin on the handleplaying in the slot of said sector, and hence is a new and differentmechanical construction having a new and different mode of operation.

I-Iaving thus described my invention, what I claim as new, and desire tosecu re by Letters Patent, is-

1. In a razor-stropping device, the combination with a frame carrying apair of supporting-arms, adapted to rest upon a razorstrap, of arotatable blade-holder centrally mounted in said frame and provided withperipheral cog-gearing and an extension end or spindle journaled in saidframe, a handle pivotally connected with said' supportingframe andcarrying a sector end provided with rack-gearing meshing with theannular gearing on the rotatable blade-holder, and with means to limitthe arc of rotation relatively, ot the supporting-frame and thepivotally-connected handle; substantially as described.

2. In a razor-stropping device the combination with the supporting-frameA carrying a pair of fixed arms a, a of a rotatable bladeholder carryingannular cog-gearing and having a spindle end c journaled in the frame, ahandle B pivotally mounted in the crossbar of the frame A and providedwith a Sector I-I haying cog-gearing h, and'slotted at n to receive apin t mounted on the supportingframe of the device; substantially asdescribed.

In testimony whereof I have hereunto affixed my signature this 9th dayof February, A. D. 1900.

HERMAN HERDER.

IVitnesses:

WALTER C. Pusnv, H. T. FENTON.

